LPN exams gastrointestinal practice questions set 11

Correct answer:

The most appropriate initial question is C: "Do you have any difficulty in preparing or eating food?" This question directly assesses the patient's ability to obtain and consume food, which is crucial in determining malnutrition risk. By asking about difficulties in food preparation and eating, the nurse can identify any physical or cognitive impairments that may impact the patient's nutritional intake. A: "How do you get to the store to buy your food?" is irrelevant to assessing malnutrition risk and does not directly address the patient's ability to eat. B: "Can you tell me the food that you ate yesterday?" does not assess the patient's current ability to obtain and consume food. D: "Are you taking any medications that alter your taste for food?" is important but not as crucial as assessing the patient's ability to prepare and eat food.

Correct answer:

The correct answer is C because the patient who was discharged 2 weeks earlier after aminoglycoside therapy is at the greatest risk of developing acute kidney injury. Aminoglycosides are known nephrotoxic drugs, and prolonged exposure increases the risk of kidney damage. The 2-week course followed by discharge indicates a high cumulative dose, which further elevates the risk. Choice A is incorrect because although aminoglycosides are nephrotoxic, a shorter duration of therapy compared to the patient in choice C reduces the risk. Choice B is incorrect as controlled hypertension with a blood pressure of 138/88 mm Hg does not directly increase the risk of acute kidney injury. Choice D is incorrect because while fluid overload can strain the kidneys, the direct nephrotoxic effects of aminoglycosides in choice C pose a higher immediate risk.

Correct answer:

The correct answer is B: Providing skin care to the area around the tube site. This task can be safely delegated to an LPN/VN because it involves basic wound care and monitoring for signs of infection or skin breakdown. LPNs/VNs are trained to provide this type of care under the supervision of a registered nurse (RN). A: Assessing the patient's nutritional status weekly requires a higher level of assessment and interpretation of data, which is typically within the scope of an RN. C: Teaching the patient how to administer the feedings involves patient education and requires a higher level of critical thinking and assessment skills, typically performed by an RN. D: Determining the need for adding water to the feedings involves making clinical judgments and adjustments to the enteral nutrition plan, which should be overseen by an RN.

Correct answer:

Rationale: A complete block at the AV node would prevent the transmission of the pacemaker signal from the SA node to the ventricles. As a result, the ventricles would not receive the signal to contract at their normal rate. Instead, they would rely on their inherent ability to generate impulses, resulting in a slower, but still rhythmic contraction. This scenario is known as an escape rhythm, where a lower pacemaker takes over in the absence of the SA node signal. Summary: A: the ventricles would cease beating - Incorrect, as the ventricles have their own intrinsic pacemaker. B: the ventricles would beat very fast and uncontrollably - Incorrect, as a complete AV block would lead to a slower rhythm. D: the ventricles would contract at the same rate as the atria - Incorrect, as the ventricles and atria have different intrinsic rates.

Correct answer:

The correct answer is D: Proteases. Proteases are enzymes that break down proteins, and they are known to function optimally in low pH environments, such as the acidic environment of the stomach. This is because the acidic pH helps in the activation and stability of proteases, allowing them to efficiently break down proteins into smaller peptides and amino acids. Rationale for why the other choices are incorrect: A: Peroxidases catalyze oxidation reactions and are not specifically known to act in low pH environments. B: Hydrolases are a broad category of enzymes that catalyze the hydrolysis of various molecules but are not specifically tailored for low pH conditions. C: Amylases are enzymes that break down carbohydrates and typically work best in neutral to slightly alkaline pH conditions, not in low pH environments like proteases.

Correct answer:

The correct answer is D because the gastrocolic reflex is a natural physiological response where eating triggers contractions in the colon, leading to increased peristalsis and bowel movements. By suggesting the patient to attempt defecation after breakfast, the nurse is utilizing this reflex to help stimulate bowel movements. This suggestion aligns with the patient's complaint of irregular bowel movements and aims to promote regularity. Choice A is incorrect as taking additional laxatives can lead to dependence and may not address the underlying cause of the irregular bowel movements. Choice B is incorrect as the acidity of foods does not directly impact peristalsis. Choice C is incorrect as reducing food intake may not necessarily address the issue of slowed peristalsis and could potentially lead to other nutritional deficiencies.

Correct answer:

The primary buffer system in the extracellular fluid (ECF) is the bicarbonate/carbonic acid system. This system helps maintain the pH of the blood within a narrow range by accepting or releasing hydrogen ions. Carbonic acid can donate hydrogen ions to lower pH, while bicarbonate can accept hydrogen ions to raise pH. Haemoglobin primarily functions as an oxygen transporter in the blood and does not play a significant role as a buffer in the ECF. Chloride/hydrochloric acid is more involved in the stomach's acidic environment and is not a primary buffer system in the ECF. Phosphate is a buffer system mainly found in the intracellular fluid and urine, not in the ECF. Therefore, option C is the correct answer as it is the primary buffer system in the ECF, while the other options are not as directly involved in maintaining the ECF pH balance.

Correct answer:

The correct answer is B: Administer kanamycin (Kantrex) the night before surgery. This antibiotic is typically given preoperatively to reduce the risk of infection during the surgical procedure. It helps to eliminate or reduce the number of bacteria in the gastrointestinal tract, which could potentially contaminate the surgical site during the abdominal perineal resection with permanent colostomy. A: Keeping the client NPO for 2 days before surgery is not necessary for this procedure and could lead to unnecessary dehydration and discomfort. C: Informing the client that chest tubes will be in place after surgery is not directly related to preoperative preparation for this specific surgery. D: Advising the client to limit activity is important for postoperative recovery, but it is not a preoperative measure specific to this surgery.

Correct answer:

The correct answer is D: Alcohol abuse and smoking. Both alcohol abuse and smoking are well-established risk factors for peptic ulcers. Alcohol can irritate and damage the stomach lining, while smoking can increase stomach acid production and weaken the stomach lining. These factors can contribute to the development of peptic ulcers. Choice A (A sedentary lifestyle and smoking) is incorrect because while smoking is a risk factor, a sedentary lifestyle is not directly linked to the development of peptic ulcers. Choice B (A history of hemorrhoids and smoking) is incorrect because hemorrhoids are not a known risk factor for peptic ulcers. Choice C (Alcohol abuse and a history of acute renal failure) is incorrect because acute renal failure is not typically associated with an increased risk of peptic ulcers, unlike alcohol abuse.

Correct answer:

The correct answer is A: mass movements. Mass movements are strong contractions that occur 3 to 4 times a day, moving large amounts of fecal material through the colon. This process involves the transverse and descending colon, which aligns with the description provided in the question. Mass movements help propel waste towards the rectum for elimination. Choice B, haustral churning, refers to the mixing and propelling actions that occur in the haustra of the colon, not involving large parts of the transverse and descending colon. Choice C, the defecation reflex, is the process that triggers the urge to defecate, not specific contractions involving the colon. Choice D, teniae coli waves, are contractions of the longitudinal muscles of the colon that create the haustra, not the strong propulsive contractions described in the question.